void ApplyNoirFilter(object sender, EventArgs e)
{
Asset.RequestContentEditingInput (new PHContentEditingInputRequestOptions (), (input, options) => {
// perform the editing operation, which applies a noir filter in this case
var image = CIImage.FromUrl (input.FullSizeImageUrl);
image = image.CreateWithOrientation ((CIImageOrientation)input.FullSizeImageOrientation);
var noir = new CIPhotoEffectNoir {
Image = image
};
var ciContext = CIContext.FromOptions (null);
var output = noir.OutputImage;
var uiImage = UIImage.FromImage (ciContext.CreateCGImage (output, output.Extent));
imageView.Image = uiImage;
// save the filtered image data to a PHContentEditingOutput instance
var editingOutput = new PHContentEditingOutput (input);
var adjustmentData = new PHAdjustmentData ();
var data = uiImage.AsJPEG ();
NSError error;
data.Save (editingOutput.RenderedContentUrl, false, out error);
editingOutput.AdjustmentData = adjustmentData;
// make a change request to publish the changes form the editing output
PHPhotoLibrary.GetSharedPhotoLibrary.PerformChanges (
() => {
PHAssetChangeRequest request = PHAssetChangeRequest.ChangeRequest (Asset);
request.ContentEditingOutput = editingOutput;
},
(ok, err) => Console.WriteLine ("photo updated successfully: {0}", ok));
});
}
void OnApplyFilter(object sender, EventArgs e)
{
Asset.RequestContentEditingInput(new PHContentEditingInputRequestOptions(),
(input, options) => {
var image = CIImage.FromUrl(input.FullSizeImageUrl);
image = image.CreateWithOrientation(input.FullSizeImageOrientation);
var updatedPhoto = new CIPhotoEffectNoir {
Image = image
};
var ciContext = CIContext.FromOptions(null);
var output = updatedPhoto.OutputImage;
// Get the upated image
var uiImage = UIImage.FromImage(ciContext.CreateCGImage(output, output.Extent));
TheImage.Image = uiImage;
// Save the image data to a PHContentEditingOutput instance
var editingOutput = new PHContentEditingOutput(input);
NSError error;
var data = uiImage.AsJPEG();
data.Save(editingOutput.RenderedContentUrl, false, out error);
editingOutput.AdjustmentData = new PHAdjustmentData();;
// Request to publish the changes form the editing output back to the photo library
PHPhotoLibrary.SharedPhotoLibrary.PerformChanges(
() => {
PHAssetChangeRequest request = PHAssetChangeRequest.ChangeRequest(Asset);
request.ContentEditingOutput = editingOutput;
},
(ok, err) => Console.WriteLine("Photo updated : {0}, {1}", ok, err));
});
}
void ApplyNoirFilter(object sender, EventArgs e)
{
Asset.RequestContentEditingInput(new PHContentEditingInputRequestOptions(), (input, options) => {
// perform the editing operation, which applies a noir filter in this case
var image = CIImage.FromUrl(input.FullSizeImageUrl);
image = image.CreateWithOrientation((CIImageOrientation)input.FullSizeImageOrientation);
var noir = new CIPhotoEffectNoir {
Image = image
};
var ciContext = CIContext.FromOptions(null);
var output = noir.OutputImage;
var uiImage = UIImage.FromImage(ciContext.CreateCGImage(output, output.Extent));
imageView.Image = uiImage;
// save the filtered image data to a PHContentEditingOutput instance
var editingOutput = new PHContentEditingOutput(input);
var adjustmentData = new PHAdjustmentData();
var data = uiImage.AsJPEG();
NSError error;
data.Save(editingOutput.RenderedContentUrl, false, out error);
editingOutput.AdjustmentData = adjustmentData;
// make a change request to publish the changes form the editing output
PHPhotoLibrary.SharedPhotoLibrary.PerformChanges(
() => {
PHAssetChangeRequest request = PHAssetChangeRequest.ChangeRequest(Asset);
request.ContentEditingOutput = editingOutput;
},
(ok, err) => Console.WriteLine("photo updated successfully: {0}", ok));
});
}
/// <summary>
/// Produces a high-contrast black-and-white image.
/// </summary>
/// <returns>The altered image.</returns>
CIImage PhotoEffectNoir ()
{
var photo_effect_noir = new CIPhotoEffectNoir ()
{
Image = flower
};
return photo_effect_noir.OutputImage;
}
